33332161 has 4 divisors (see below), whose sum is σ = 34407424. Its totient is φ = 32256900.

The previous prime is 33332149. The next prime is 33332171. The reversal of 33332161 is 16123333.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33332161 - 2¹¹ = 33330113 is a prime.

It is a super-2 number, since 2×33332161² = 2222065913859842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33332111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537585 + ... + 537646.

It is an arithmetic number, because the mean of its divisors is an integer number (8601856).

Almost surely, 2^33332161 is an apocalyptic number.

33332161 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33332161 is a deficient number, since it is larger than the sum of its proper divisors (1075263).

33332161 is a wasteful number, since it uses less digits than its factorization.

33332161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075262.

The product of its digits is 972, while the sum is 22.

The square root of 33332161 is about 5773.4011639587. The cubic root of 33332161 is about 321.8260219063.

Adding to 33332161 its reverse (16123333), we get a palindrome (49455494).

The spelling of 33332161 in words is "thirty-three million, three hundred thirty-two thousand, one hundred sixty-one".